Do not rename R.java package

Cherry picks the rest of Id9d10e16f32533da1b67ab72ac846791526e7a76.

When the --rename-resources-package flag is used, only rename the
package name within the resources.arsc. Generate the R.java under
the package name defined by the manifest unless --custom-package is
used.

Test: manual
Bug: 147434671
Merged-In: Iab30ff9d3d136fa1e5464913f8d493df22c5c1c4
Change-Id: I896b8c69793cff714a950081fd8521e4acf0cf25